Download CCIE Data Center Written Exam.certkiller.400-151.2019-07-02.1e.182q.vcex

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Exam CCIE Data Center Written Exam
Number 400-151
File Name CCIE Data Center Written Exam.certkiller.400-151.2019-07-02.1e.182q.vcex
Size 11.88 Mb
Posted July 02, 2019
Downloads 13


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Demo Questions

Question 1
Which two statements about VXLAN are true? (Choose two.)

  • A: VXLAN uses a UDP destination port of 4987.
  • B: A VTEP is a virtual or physical device that maps end devices to VXLAN segments.
  • C: Devices that terminate VXLAN tunnels are known as VTEPs.
  • D: VXLAN adds an additional 32 bytes worth of headers.
Correct Answer: BC



Question 2
Which two security features are supported by NX-API (Choose two.)

  • A: NX-API support certificate-based authentication.
  • B: Users must have appropriate accounts to access the device through NX-API.
  • C: All communication to the device is encrypted when you use HTTPS.
  • D: All communication to the device is encrypted when you use VPN.
Correct Answer: BC



Question 3
Which statement about VTP bombing is true?

  • A: It occurs because of configuration mismatch on VTPv3 switches. This problem can be avoided using a confirmation management tool.
  • B: It occurs when switches with different VTP versions are connected together. This situation may occur when a new switch is plugged into a stable VTP domain. The MAC address table of the new switch overrides the MAC address table of stable switches causing interruption of service.
  • C: It occurs when a client connects to a switch and launches a distributed denial of service attack against the VTP domain. This attack is possible only ifthe client knows the VTP password.
  • D: It occurs when a server with a higher revision number and a wrong VTP database is inserted into the VTP domain. This situation may occur when a new switch plugged into a stable VTP domain. The incorrect database is propagated to the domain and the earlier stable database is overwritten.
Correct Answer: D



Question 4
Which two options are functions of the 6LoWPAN header? (Choose two.)

  • A: packet fragmentation and reassembly
  • B: limit the lifespan of a packet (TTL)
  • C: IPv6 header compression
  • D: cyclic redundancy check
  • E: Layer 2 encryption
Correct Answer: AC



Question 5
Which three options are benefits of the vPC peer switch feature? (Choose three.)

  • A: After the peer link comes up, it performs an ARP bulk sync over CFSoE to the peer switch
  • B: It improves convergence forLayer 3 flows.
  • C: It allows a pair of vPC peer devices to appear as a single STP root in the Layer 2.
  • D: It simplifies STP configuration by configuring both vPC with the same STP priority.
  • E: It eliminates the recommendation to pin the STP root to the vPCprimary switch.
Correct Answer: CDE



Question 6
Which two statements about IP-directed broadcast are true? (Choose two.)

  • A: The destination address in the IP header of the packet is rewritten to the configured IP broadcast address for the subnet, and the packet is sent as a link-layer broadcast.
  • B: An IP-directed broadcast is an IP packet whose destination address is a valid broadcast address, and it originates from a node that is also part of the same subnet.
  • C: A switch that is not directly connectedto its destination subnet forwards an IP-directed broadcast in the same way it forwards unicast IP packets destined to a host on that subnet.
  • D: All switches in the network forward an IP-directed broadcast in the same way they forward multicast IP packets.
Correct Answer: AC



Question 7
Which three main functions are provided by OTV to achieve failure isolation? (Choose three.)

  • A: optimal outbound routing
  • B: unknown Unicast traffic suppression
  • C: ARP optimization
  • D: use of multiple OTV overlays
  • E: Spanning Tree isolation
  • F: unicast policy control
Correct Answer: BCE



Question 8
  

Refer to the exhibit. If you inspect a VXLAN packet at point 2, which two options about the outer fields in the VXLAN header are two? (Choose two.)

  • A: Outer S-IP = IP-1 ; Outer D-IP = IP-2.
  • B: Outer S-IP = IP-A : Outer D-IP = IP-B.
  • C: Outer S-MAC = MAC-1 ; Outer D-MAC= MAC-4.
  • D: Outer S-MAC = NAC-A ; Outer D-MAC = MAC-B.
  • E: Outer S-IP = IP-1 ; Outer D-IP = IP-4.
  • F: Outer S-MAC = MAC-1 ; Outer D-MAC = MAC-2
Correct Answer: EF



Question 9
Which two guidelines and limitations of NetFlow on Cisco NX OS are true? (Choose two.)

  • A: The Cisco Nexus 2000 Series Fabric Extender does not support bridged NetFlow.
  • B: If you change a Layer 2 interface to a Layer 3 interface, the software converts the Layer 2 NetFlow to Layer 3 NetFlow automatically.
  • C: You must configure a sourceinterface. If you do not configure a source interface, the exported remains in a disables state.
  • D: Valid record name is optional to configure.
  • E: Only Layer 2 NetFlow is applied on Layer 2 interfaces, and only Layer 3 NetFlow is applied on Layer 3 interfaces.
Correct Answer: CE



Question 10
For which two multicast distribution modes is RP Configuration required? (Choose two.)

  • A: BIDIR
  • B: RPF routes for multicast
  • C: SSM
  • D: ASM
Correct Answer: AD









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